======================================
| [  591.623204][    C0]  #2: ffffffff97b77d20 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame (./include/linux/rcupdate.h:300 (discriminator 2) ./include/linux/rcupdate.h:838 (discriminator 2) ./include/linux/rcupdate.h:1181 (discriminator 2) arch/x86/kernel/unwind_orc.c:495 (discriminator 2))
| [  591.623541][    C0]  #3: ffffffff97b77c00 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:300 (discriminator 2) kernel/rcu/tree.c:2611 (discriminator 2))
| [  591.623788][    C0]
| [  591.623788][    C0] stack backtrace:
[  591.623965][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  591.623968][    C0] Call Trace:
[  591.623969][    C0]  <IRQ>
[  591.623971][    C0]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[  591.623977][    C0]  print_usage_bug.part.0.cold (kernel/locking/lockdep.c:4042)
[  591.623981][    C0]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[  591.623986][    C0]  mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4056 kernel/locking/lockdep.c:4267)
[  591.623988][    C0]  ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[  591.623995][    C0]  ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[  591.623998][    C0]  ? save_trace (kernel/locking/lockdep.c:589)
[  591.624001][    C0]  ? unlink_anon_vmas (./include/linux/list.h:227 (discriminator 2) ./include/linux/list.h:249 (discriminator 2) ./include/linux/list.h:260 (discriminator 2) mm/rmap.c:538 (discriminator 2))
[  591.624006][    C0]  mark_lock (kernel/locking/lockdep.c:4753)
[  591.624009][    C0]  mark_usage (kernel/locking/lockdep.c:4642)
[  591.624011][    C0]  __lock_acquire (kernel/locking/lockdep.c:5191)
[  591.624014][    C0]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[  591.624016][    C0]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[  591.624020][    C0]  lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  591.624023][    C0]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[  591.624026][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  591.624029][    C0]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  591.624032][    C0]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:158 (discriminator 1) kernel/locking/spinlock.c:158 (discriminator 1))
[  591.624035][    C0]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[  591.624038][    C0] tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[  591.624041][    C0]  tcf_action_rcu_free (net/sched/act_api.c:367 net/sched/act_api.c:378)
[  591.624044][    C0]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[  591.624046][    C0]  rcu_do_batch (kernel/rcu/tree.c:2617)
[  591.624051][    C0]  ? trace_rcu_batch_end (./include/trace/events/rcu.h:714 (discriminator 19))
[  591.624054][    C0]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[  591.624056][    C0]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[  591.624059][    C0]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  591.624062][    C0]  rcu_core (kernel/rcu/tree.c:2869)
[  591.624065][    C0]  handle_softirqs (kernel/softirq.c:622)
[  591.624068][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  591.624072][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  591.624075][    C0]  ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[  591.624078][    C0]  __irq_exit_rcu (kernel/softirq.c:656 kernel/softirq.c:496 kernel/softirq.c:735)
[  591.624080][    C0]  irq_exit_rcu (kernel/softirq.c:752)
[  591.624083][    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[  591.624085][    C0]  </IRQ>
[  591.624086][    C0]  <TASK>
[  591.624087][    C0]  ? modify_user_hw_breakpoint_check (kernel/events/hw_breakpoint.c:788)
[  591.624091][    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[  591.624094][    C0] RIP: 0010:lock_acquire.part.0 (./arch/x86/include/asm/irqflags.h:158 (discriminator 1) kernel/locking/lockdep.c:5871 (discriminator 1))
[  591.624097][    C0] Code: ff 65 0f c1 05 37 d9 33 04 83 f8 01 4c 8b 14 24 0f 85 30 01 00 00 9c 58 f6 c4 02 0f 85 4d 01 00 00 4d 85 d2 0f 85 16 01 00 00 <48> 8b 44 24 30 65 48 2b 05 a9 92 33 04 0f 85 43 01 00 00 48 83 c4
All code
========
   0:	ff 65 0f             	jmp    *0xf(%rbp)
   3:	c1 05 37 d9 33 04 83 	roll   $0x83,0x433d937(%rip)        # 0x433d941
   a:	f8                   	clc
   b:	01 4c 8b 14          	add    %ecx,0x14(%rbx,%rcx,4)
   f:	24 0f                	and    $0xf,%al
  11:	85 30                	test   %esi,(%rax)
  13:	01 00                	add    %eax,(%rax)
  15:	00 9c 58 f6 c4 02 0f 	add    %bl,0xf02c4f6(%rax,%rbx,2)
  1c:	85 4d 01             	test   %ecx,0x1(%rbp)
  1f:	00 00                	add    %al,(%rax)
  21:	4d 85 d2             	test   %r10,%r10
  24:	0f 85 16 01 00 00    	jne    0x140
  2a:*	48 8b 44 24 30       	mov    0x30(%rsp),%rax		<-- trapping instruction
  2f:	65 48 2b 05 a9 92 33 	sub    %gs:0x43392a9(%rip),%rax        # 0x43392e0
  36:	04 
  37:	0f 85 43 01 00 00    	jne    0x180
  3d:	48                   	rex.W
  3e:	83                   	.byte 0x83
  3f:	c4                   	.byte 0xc4

Code starting with the faulting instruction
===========================================
   0:	48 8b 44 24 30       	mov    0x30(%rsp),%rax
   5:	65 48 2b 05 a9 92 33 	sub    %gs:0x43392a9(%rip),%rax        # 0x43392b6
   c:	04 
   d:	0f 85 43 01 00 00    	jne    0x156
  13:	48                   	rex.W
  14:	83                   	.byte 0x83
  15:	c4                   	.byte 0xc4
[  591.624100][    C0] RSP: 0000:ffa0000000697718 EFLAGS: 00000206
[  591.624103][    C0] RAX: 0000000000000046 RBX: 0000000000000000 RCX: eb86d55252cb3d33
[  591.624105][    C0] RDX: 0000000000000001 RSI: ffffffff975ebde8 RDI: ffffffff9706f6c0
[  591.624107][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ff11000013a15180
[  591.624108][    C0] R10: 0000000000000200 R11: 0000000000000001 R12: ffffffff97b77d20
[  591.624109][    C0] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
[  591.624114][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  591.624117][    C0]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  591.624120][    C0]  unwind_next_frame (./include/linux/rcupdate.h:300 (discriminator 2) ./include/linux/rcupdate.h:838 (discriminator 2) ./include/linux/rcupdate.h:1181 (discriminator 2) arch/x86/kernel/unwind_orc.c:495 (discriminator 2))
[  591.624122][    C0]  ? unwind_next_frame (./include/linux/rcupdate.h:300 (discriminator 2) ./include/linux/rcupdate.h:838 (discriminator 2) ./include/linux/rcupdate.h:1181 (discriminator 2) arch/x86/kernel/unwind_orc.c:495 (discriminator 2))
[  591.624124][    C0]  ? __kasan_slab_alloc (mm/kasan/common.c:340 mm/kasan/common.c:366)
[  591.624128][    C0]  ? stack_access_ok (./arch/x86/include/asm/stacktrace.h:55)
[  591.624132][    C0]  ? __unwind_start (arch/x86/kernel/unwind_orc.c:787)
[  591.624134][    C0]  ? write_profile (profile.c:?)
[  591.624137][    C0]  arch_stack_walk (arch/x86/kernel/stacktrace.c:25)
[  591.624143][    C0]  ? __kasan_slab_alloc (mm/kasan/common.c:340 mm/kasan/common.c:366)
[  591.624146][    C0]  stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[  591.624149][    C0]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[  591.624152][    C0]  ? is_bpf_text_address (./include/linux/rcupdate.h:871 kernel/bpf/core.c:749)
[  591.624156][    C0]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[  591.624159][    C0]  ? __kernel_text_address (kernel/extable.c:79)
[  591.624161][    C0]  ? write_profile (profile.c:?)
[  591.624164][    C0]  kasan_save_stack (mm/kasan/common.c:57)
[  591.624167][    C0]  ? kasan_save_stack (mm/kasan/common.c:57)
[  591.624170][    C0]  ? kasan_save_track (mm/kasan/common.c:78)
[  591.624173][    C0]  ? __kasan_slab_alloc (mm/kasan/common.c:340 mm/kasan/common.c:366)
[  591.624182][    C0]  kasan_save_track (mm/kasan/common.c:78)
[  591.624185][    C0]  __kasan_slab_alloc (mm/kasan/common.c:340 mm/kasan/common.c:366)
[  591.624187][    C0]  kmem_cache_alloc_noprof (./include/linux/kasan.h:253 mm/slub.c:4570 mm/slub.c:4899 mm/slub.c:4906)
[  591.624192][    C0]  __anon_vma_prepare (mm/rmap.c:142 (discriminator 7) mm/rmap.c:194 (discriminator 7))
[  591.624195][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  591.624197][    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  591.624200][    C0]  __vmf_anon_prepare (mm/memory.c:3829)
[  591.624203][    C0]  do_pte_missing (mm/internal.h:503 mm/memory.c:5929 mm/memory.c:6045 mm/memory.c:4566)
[  591.624205][    C0]  ? rcu_read_unlock (./include/linux/rcupdate.h:867 (discriminator 5))
[  591.624208][    C0]  ? rcu_read_unlock (./include/linux/rcupdate.h:867 (discriminator 6))
[  591.624210][    C0]  __handle_mm_fault (mm/memory.c:6427 mm/memory.c:6565)
[  591.624213][    C0]  ? __pmd_alloc (./include/linux/mm.h:1682)
[  591.624216][    C0]  ? lock_vma_under_rcu (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) mm/mmap_lock.c:329 (discriminator 2))
[  591.624218][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5574)
[  591.624224][    C0]  handle_mm_fault (mm/memory.c:6734)
[  591.624227][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  591.624230][    C0]  do_user_addr_fault (arch/x86/mm/fault.c:1334)
[  591.624234][    C0]  ? irqentry_enter (./include/linux/irq-entry-common.h:108 ./include/linux/irq-entry-common.h:293 kernel/entry/common.c:113)
[  591.624237][    C0]  exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[  591.624240][    C0]  asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:618)
[  591.624242][    C0] RIP: 0033:0x7f9e797be9b0
[  591.624245][    C0] Code: 30 c3 0f 1f 84 00 00 00 00 00 66 48 0f 7e c6 83 fa 08 7d 16 83 fa 04 7d 1a 83 fa 01 7f 1c 7c 03 40 88 37 c3 66 0f 1f 44 00 00 <48> 89 37 48 89 74 17 f8 c3 89 37 89 74 17 fc c3 66 89 37 40 88 74
All code
========
   0:	30 c3                	xor    %al,%bl
   2:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   9:	00 
   a:	66 48 0f 7e c6       	movq   %xmm0,%rsi
   f:	83 fa 08             	cmp    $0x8,%edx
  12:	7d 16                	jge    0x2a
  14:	83 fa 04             	cmp    $0x4,%edx
  17:	7d 1a                	jge    0x33
  19:	83 fa 01             	cmp    $0x1,%edx
  1c:	7f 1c                	jg     0x3a
  1e:	7c 03                	jl     0x23
  20:	40 88 37             	mov    %sil,(%rdi)
  23:	c3                   	ret
  24:	66 0f 1f 44 00 00    	nopw   0x0(%rax,%rax,1)
  2a:*	48 89 37             	mov    %rsi,(%rdi)		<-- trapping instruction
  2d:	48 89 74 17 f8       	mov    %rsi,-0x8(%rdi,%rdx,1)
  32:	c3                   	ret
  33:	89 37                	mov    %esi,(%rdi)
  35:	89 74 17 fc          	mov    %esi,-0x4(%rdi,%rdx,1)
  39:	c3                   	ret
  3a:	66 89 37             	mov    %si,(%rdi)
  3d:	40                   	rex
  3e:	88                   	.byte 0x88
  3f:	74                   	.byte 0x74

Code starting with the faulting instruction
===========================================
   0:	48 89 37             	mov    %rsi,(%rdi)
   3:	48 89 74 17 f8       	mov    %rsi,-0x8(%rdi,%rdx,1)
   8:	c3                   	ret
   9:	89 37                	mov    %esi,(%rdi)
   b:	89 74 17 fc          	mov    %esi,-0x4(%rdi,%rdx,1)
   f:	c3                   	ret
  10:	66 89 37             	mov    %si,(%rdi)
  13:	40                   	rex
  14:	88                   	.byte 0x88
  15:	74                   	.byte 0x74
[  591.624247][    C0] RSP: 002b:00007fff298ac7d8 EFLAGS: 00010246
[  591.624249][    C0] RAX: 00007f9e796ccff8 RBX: 00007f9e797907a0 RCX: 00007f9e796ccff8
[  591.624251][    C0] RDX: 0000000000000008 RSI: 0000000000000000 RDI: 00007f9e796ccff8
[  591.624252][    C0] RBP: 00007fff298acbb0 R08: 00007f9e796cd000 R09: 0000000000000003
[  591.624253][    C0] R10: 00007f9e796cd000 R11: 0000000000000206 R12: 0000000000000003


Finger prints:
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock